html {
    height: 100%;
}
body { 
    height: 100%;
    overflow: hidden;
    font-family: "Microsoft YaHei", "Hiragino Sans GB", "微软雅黑", tahoma, arial, simsun, "宋体";
    background: url("../images/error-bg.jpg") no-repeat;
    background-size: 100% 100%;
}
.content {
    position: relative;
    left: 50%;
    width: 500px;
    margin-left: -250px;
    padding-top: 100px;
    text-align: center;
}

h2 {
    color: #fff;
}
.error {
    width: 100%;
    height: 153px;
    margin: 50px 0;
}
.content a {
    display: block;
    width: 90px;
    height: 40px;
    margin: 0 auto;
    text-align: center;
    text-decoration: none;
    line-height: 40px;
    background-color: #6cafed;
    border: 1px solid #6cafed;
    border-radius: 5px;
    font-family: "Microsoft YaHei", "Hiragino Sans GB", "微软雅黑", tahoma, arial, simsun, "宋体";
    color: #fff;
}
.content a:hover {
    background-color: #28abe3;
}